A zillion times slower in version 5
- To: mathgroup at smc.vnet.net
- Subject: [mg46294] A zillion times slower in version 5
- From: "Joshua A. Solomon" <J.A.Solomon at city.ac.uk>
- Date: Fri, 13 Feb 2004 21:57:00 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
In[1]:= bug[x_,{a_,b_,c_,d_}]:=c+(1-c-d)(1-Exp[-(10^((x-a)/20))^b])
Using Mathematica 4...
In[2]:= {$Version, $ReleaseNumber}
Out[2]:= {4.1 for Mac OS X (November 5, 2001),5}
In[3]:= Timing[bug[-8,{-60,3.5,0.5,0.01}]]
Out[3]:= {0. Second,0.99}
Using Mathematica 5...
In[2]:= {$Version, $ReleaseNumber}
Out[2]:= {5.0 for Mac OS X (June 10, 2003),0}
In[3]:= Timing[bug[-8,{-60,3.5,0.5,0.01}]]
Out[3]:= {6.21 Second,0.99}
Six seconds! What is it doing? What is the best way to streamline this?
js